Chunqing ZHANG
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二乙二醇单乙醚基钡-三异丁基铝-正丁基锂引发体系合成高反式1,4-聚丁二烯
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Indexed by:期刊论文

Date of Publication:2009-03-15

Journal:石油化工

Included Journals:Scopus、PKU、ISTIC、CSCD

Volume:38

Issue:3

Page Number:316-321

ISSN No.:1000-8144

Key Words:二乙二醇单乙醚基钡;三异丁基铝;正丁基锂;丁二烯;高反式1;4-聚丁二烯;阴离子聚合

Abstract:采用二乙二醇单乙醚基钡-三异丁基铝-正丁基锂(BaDEGEE-TIBA-n-BuLi)三组分阴离子引发体系合成了不同反式1,4-聚丁二烯含量(质量分数最高可达92.1%)的高反式1,4-聚丁二烯(HTPB),HTPB的相对分子质量呈单峰分布,相对分子质量分布指数为1.35左右.考察了催化剂组分的配比(n(Ba):n(Li)和n(Al):n(Li))、聚合温度对HTPB微观结构的影响.实验结果表明,随n(Ba):n(Li)的增大,HTPB的含量增加,当n(Ba):n(Li)>0.30时,单体转化率显著下降;随n(Al):n(Li)的增大,HTPB的含量增加,当n(Al):n(Li)>1.00时,单体转化率明显下降;随聚合温度的降低,HTPB的含量略有增加.确定了合成HTPB的最佳工艺参数(n(Ba):n(Li)=0.20~0.40、n(Al):n(Li)= 0.25~1.00、聚合温度60~80 ℃,探讨了BaDEGEE-TIBA-n-BuLi三组分阴离子引发体系合成HTPB的反应机理.

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Gender:Male

Alma Mater:Dalian University of Technology

Degree:Doctoral Degree

School/Department:Dept. of Polymer Materials

Discipline:Polymer Materials. Polymer Chemistry and Physics. Chemistry and Chemical Engineering of Functional

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